An intentional exhaust leak? Sure, it can be done.. or you could simply just remove the mufflers altogether. It would be illegal, wouldn't pass safety inspection, and would sound like crap.. but it can be done.
I think you mean CO poisoning . . . . . . unless you're talking about death from drinking way too many carbonated sodas or beers.Please don't intentionally create an exhaust leak in your piping for more sound. co2 poisoning is no joke. Either have a muffler shop cut the mufflers and weld on pipes as suggested, or save and get a proper delete later.